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The masses of the three wires of copper ...

The masses of the three wires of copper are in the ratio `5:3:1` and their lengths are in the ratio `1:3:5`. The ratio of their electrical resistances is

A

`5:3:1`

B

`sqrt125:15:1`

C

`1:15:125`

D

`1:3:5`

Text Solution

Verified by Experts

`R_1:R_2:R_3=l_1^2/m_1"l_2^2/m_2:l_3^2/m_3`
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